Ubuntu: How to calibrate the laptop battery on 12.04



Question:

Since a couple of days or so my laptop (asus n76vm) does a hard shut-down when the battery indicates 20% life left. It just cuts off the power, no shut-down screen or anything, making the hard drive do that nasty 'scratchy' sound.

What should I do now? It seems the battery is less powerfull than it was before (which makes sense) but the OS didn't keep track. How should I go about re-calibrating the battery?


Solution:1

Have you tried power-calibrate ?

sudo apt install power-calibrate  

then run

power-calibrate -r  

You can read the manual or run man power-calibrate for more information.


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